Kevin, last week i sent a friend to you( BlackDog ) for a Spikes Tactical .22 conversion kit. he is using the kit in a Colt AR15 sporter with the large( .170 ) lower pins. can you suggest a round hammer( no notch on top ) to fit his lower, for use with the kit ? he did call Spikes, and they could only come up with the JP Enterprise AR15 speed hammer(.170 ). just trying to find all options. by the way, you should call the 50rd drum "the Timex" because it keeps on.... thanks, Kevin
